Great information and I believe it to be accurate. My memory is getting fuzzy (apologies) but I believe this is the same style tops that are on the ORIGINAL BUDWEISER beer bottles (traded my last one off years ago).ORIGINAL: dogtx
Found this.
F.H.G.W...............Frederick Heitz Glass Works, St. Louis, MO (1883-1896). This mark was incorrectly attributed by Toulouse (Bottle Makers and their Marks, 1971) to the Frederick Hampson Glass Works, Salford, Lancashire, England. Most commonly, these marks are seen on export-style beer bottles as well as on "wax sealer" fruit jars, both of which have an unmistakably characteristic American "look" about them. The wax sealers are virtually identical in appearance to typical specimens made by factories in the Midwest during the 1880s, especially at St. Louis, Louisville, Pittsburgh, and at several plants in the state of Indiana. Alice Creswick, in The Fruit Jar Works, illustrates wax sealer jars base-lettered "F.H." and "F.H.G.W.", with various mold numbers centered below the initials (similar to the way in which the bottles are marked) and she attributed them to the Federal Hill Glass Works (also known as the Baltimore Glass Works), Baltimore, Maryland. However, there is no evidence that Federal Hill ever marked any items with these initials. Furthermore, Federal Hill Glass Works did not operate past 1870 (or 1873, according to one source), which is too early for the manufacture of the type of export beer bottles which carry the FHGW marking. This type of bottle was not manufactured until approximately 1876, after Anheuser-Busch of St. Louis began the pasteurizing of beer which permitted it to be bottled and exported in large quantities throughout the U.S., and especially throughout the West. Many other breweries in St.Louis marketed competing brands that were packaged in these typically shaped bottles -- most of which were made by several glass plants located in St. Louis and the surrounding area. A recent search of the St. Louis city directories revealed that the relatively obscure plant known as the Frederick Heitz Glass Works operated in that city for about 13 years.